What does the grey number above the petal container indicate?

English DISCUSSION ABOUT THE GAME
1

321 in this case.

What is it?

Also, when I shake a large flower, the petals that fall don’t wind up in their vial. What’s up with that?

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2

321 is the amount of nectar from this flower(In this case, it’s a yellow parrot tulip).

Furthermore, swiping the big flower drops not petals, but nectar.